Creative,exquisite,ingenious, focusing on every detail! Single shoulder adjustable zipper Close the zipper to become a shoulder bag, open the zipper to become a shoulder bag, a dual-use bag. Adjustable shoulder strap buckle It can be adjusted at will until you have the right length, which makes your back more comfortable. High quality metal buckle Choosing high-quality metal buttons can not only increase the texture of the backpack, but also increase the durability of the backpack.